Pretty light, believe it or not, the 4x8 is lighter than the 1x15.
Blurb says...
Introduced in 1994, the 4x8 was originally designed to be run as an extension to the Silverado Combo but later became popular as part of a modular system that included the Bass 350 and Basic 2-Way. The 4x8 was discontinued in 1997.
Impedance: 8 ohms
Power Handling Capacity: 250 watts RMS
Four custom 8" PAS drivers
One Piezo tweeter
Weight: 55 lbs
Size: 23"W x 19.8"H x 16.5"D
The two way basic 1x15 blurb...
BASIC 2-WAY
Introduced in 1992 (primarily for use as an extension speaker for the Basic Black Combo) the Basic 2-Way enjoyed popularity as part of a modular system that included the Bass 350 and 4x8. The Basic 2-Way was discontinued in 1998.
Impedance: 8 ohms
Power Handling Capacity: 250 watts RMS
One 15" PAS driver
One Piezo tweeter
Weight: 59 lbs
Size: 22"W x 20"H x 16.5"D